Internet Explorer Error Code 401
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Error Messages Basics by Tim Fisher Updated October 07, 2016 401 Unauthorized error messages are often customized by each website, especially very large ones, so keep in mind that this error https://support.microsoft.com/en-us/kb/902160 may present itself in more ways than these common ones:"401 Unauthorized""Authorization Required""HTTP Error 401 - Unauthorized"The 401 Unauthorized error displays inside the Internet browser window, just as web pages do.Cause of 401 Unauthorized ErrorsThe 401 Unauthorized error is an HTTP status code that means the page you were trying to access cannot be loaded until you first log in with a valid http://pcsupport.about.com/od/findbyerrormessage/a/401error.htm user ID and password. If you have just logged in and received the 401 Unauthorized error, it means that the credentials you entered were invalid for some reason.How to Fix the 401 Unauthorized Error Check for errors in the URL. It's possible that the 401 Unauthorized error appeared because the URL was typed incorrectly or the link that was clicked on points to the wrong URL - one that is for authorized users only.If you're sure the URL is valid, visit the website's main page and look for a link that says Login or Secure Access. Enter your credentials here and then try the page again. If you don't have credentials, follow the instructions provided on the website for setting up an account.If you're sure the page you're trying to reach shouldn't need authorization, the 401 Unauthorized error message may be a mistake. At that point, it's probably best to contact the webmaster or other website contact and inform them of the problem. The webmaster of most Internet sites can be reached via email at webmaster@website.com, replacing website.com with the actual website name. T
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/32526579/error-401-and-403-only-in-internet-explorer-not-in-chrome-firefox-iis-c company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions http://www.solvusoft.com/en/errors/runtime-errors/microsoft-corporation/internet-explorer/401-unauthorized-ie-error-401-unauthorized/ Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error 401 and 403 only in Internet Explorer (not in Chrome, Firefox, ..) - IIS configuration? up vote 0 down error 401 vote favorite I am trying to connect to a site that is running on IIS on my local machine. When I am using Anonymous Authentication, it works fine in Chrome and Firefox, but in IE I get HTTP Error 401.0 - Unauthorized. The error details are: Module: ManagedPipelineHandler Notification: ExecuteRequestHandler Handler: System.Web.Mvc.MvcHandler Error Code: 0x00000000 Requested URL: http://localhost:80/ Logon Method: Anonymous Logon User: Anonymous When using Windows Authentication, it also works in Chrome and how to fix Firefox, but in IE I get HTTP Error 403.0 - Forbidden. The only difference in error details is the Logon User (which is my login to intranet network) and Logon Method (which is "Negotiate" or "NTLM", depending on which I choose as provider for Windows authentication - according to windows authentication not working in ie7 and 401 - Unauthorized in IE7 only with windows authentication.) I can access the site running on another machine in IE On different machine the site in its localhost can be accessed in IE The site running on my computer can be accessed from other computers in Chrome or Firefox, but not in IE (gives 401 or 403) I am using IIS 7.5 on Windows 7, IE 11 It seems that the problem is somewhere in the IIS configuration or maybe in some incompatibility between IE and IIS. I am not able to locate the difference between the configuration on my computer and the others. Any help appreciated. UPDATE: It works in compatibility mode with IE 10 and 9. (I was looking at IIS configuration so much that trying compatibility mode didn't cross my mind at all.) Still, my colleague was somehow using the same version without any problem. internet-explorer iis http-status-code-403 http-status-code-401 share|improve this question edited Sep 21 '15 at 14:36 ask
DriverDoc WinSweeper SupersonicPC FileViewPro About Support Contact Errors Troubleshooting › Runtime Errors › Microsoft Corporation › Internet Explorer › Error 401 Unauthorized How To Fix Internet Explorer Error 401 Unauthorized Error Number: Error 401 Unauthorized Error Name:IE Error 401 Unauthorized Error Description: Error 401 Unauthorized: Internet Explorer has encountered a problem and needs to close. We are sorry for the inconvenience. Developer:Microsoft Corporation Software:Internet Explorer Applies to:Windows XP, Vista, 7, 8 Download NowWinThruster 2015 - Scan your PC for computer errors. Compatible with Windows 10, 8, 7, Vista, XP and 2000 Symptoms of Error 401 Unauthorized "Error 401 Unauthorized" appears and crashes the active program window. Your PC frequently crashes with Error 401 Unauthorized when running the same program. “IE Error 401 Unauthorized” is displayed. Windows runs sluggishly and responds slowly to mouse or keyboard input. Your computer periodically “freezes” for a few seconds at a time. These 401 Unauthorized error messages can appear during program installation, while a Microsoft Corporation-related software program (eg. Internet Explorer) is running, during Windows startup or shutdown, or even during the installation of the Windows operating system. Keeping track of when and where your 401 Unauthorized error occurs is a critical piece of information in troubleshooting the problem. Causes of Error 401 Unauthorized Corrupt download or incomplete installation of Internet Explorer software. Corruption in Windows registry from a recent Internet Explorer-related software change (install or uninstall). Virus or malware infection that has corrupted Windows system files or Internet Explorer-related program files. Another program maliciously or mistakenly deleted Internet Explorer-related files. Runtime Errors such as “Error 401 Unauthorized” can be caused by a variety of factors, so it is important that you troubleshoot each of the possible causes to prevent it from recurring. Runtime Errors Knowledgebase Article ID: 124238 Article Author: Jay Geater Last Updated: 19-07-2016 Popularity: star rating here Download NowError Fix Learn More Tweet Recommendation: Sca